Earlier quoted context omitted.
If TikTok truly is a Chinese psyop, the most effective thing they could do is spend their remaining days sewing discontent with the government, refuse to sell, and let the whole thing burn down, thus riling up "the youths" and teaching them that their own government is a problem. They could also tell TikTok users to install a VPN and access the servers in China directly. I actually see this as a silver lining. I want…
I don't even think you need to cook up possibilities as complicated as "psyop." It is an absolute firehose of data on users and in aggregate, that is incredibly powerful. "Oh look, more people than usual have been working in office building 12 at Lockheed Martin this week" etc.
As you say, another possible purpose is that TikTok is used as a source of data and intel. I suppose it is a fine source for that, but also, if that's all China really wants, they can probably just buy most of that data on the shadowy data markets. The US Government shows no signs of stopping our personal data from being sold.